320 



Fishery Bulletin 94(2). 1996 



population and were excluded from the mortality 

 estimates derived from catch curves. For RI, JB, LO, 

 and KL, the reef-specific total annual rate of mortal- 

 ity, Z, of L. adetii, was 0.179 (fish aged 8-24 years, 

 r 2 =0.729, SE=0.0292>, 0.304 (fish aged 7-15 years, 

 r 2 =0.512, SE=0.1123), 0.225 (fish aged 7-21 years, 



;- 2 =0.781, SE=0.0344) and 0.286 (fish aged 9-15 

 years, r 2 =0.795, SE=0.0726), representing an annual 

 survivorship of approximately 83 c /c, 74%, 80%, and 

 75%, respectively (Fig. 6). The mortality rates of L. 

 adetii among reefs were significantly different (ho- 

 mogeneity of slopes test, P<0.01), and a multiple com- 



12 14 lo IS 20 22 24 20 2S .HI 32 



111 12 14 10 IS 2(1 



:i 



Lodestone 



n = 175 



"rfrnnTVi 



4 s 111 12 14 10 Is 21) 22 21 20 2S Hi 12 



HI 12 14 10 IS 2(1 22 24 20 2S 311 32 



HI 12 14 10 IS 20 22 24 20 2S 3(1 32 



Kelso 



n = 42 



K 10 12 14 Id IS 2(1 22 24 20 2S 311 32 



Age (years) 



Figure 3 



Age-frequency distributions for L. quinquelineatus among reefs in the central Great Barrier Reef. 



